Seiko Cal. 4428 - 989

The 4428-989 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-a855bf42bd29]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1987

Related Models

• Seiko 6396-990
• Seiko 4473-444
• Seiko 5255-753
• Seiko 6363-243
• Seiko 6255-253
• Seiko 4569-556
• Seiko 3864-225
• Seiko 0728-941
• Seiko 6344-689
• Seiko 6282-423
• Seiko 6246-727
• Seiko 5613-948